A human liver organoid platform for hepatotoxicity assessment: evaluation using reference compounds.

Area of Science:

• Toxicology
• Stem Cell Biology
• Drug Development

Background:

• Organoid technology offers human-relevant models for biological studies.
• Current applications of organoids in toxicity assessments are limited.
• Previous work indicated liver organoid utility for drug toxicity evaluation.

Purpose of the Study:

• To explore the response of a liver organoid model to reference compounds.
• To assess the model's performance in capturing toxicity using multiple endpoints.
• To evaluate liver organoids as an in vitro platform for integrative toxicity assessment.

Main Methods:

• Human liver organoids derived from induced pluripotent stem cells were used.
• Organoids were exposed to reference compounds classified by UN GHS acute toxicity criteria.
• Toxicity responses were evaluated via cell viability, functional biomarkers, imaging, and transcriptomics.

Main Results:

• Reference compounds induced compound-specific changes in cell viability and hepatic function (e.g., albumin secretion).
• Transcriptomic analysis revealed gene expression changes linked to hepatotoxicity, correlating with functional alterations.
• The liver organoid model demonstrated potential for capturing multi-dimensional toxicity responses.

Conclusions:

• Liver organoids show potential as an in vitro platform for integrative toxicity assessment.
• The study provides an exploratory evaluation of platform performance, not predictive capability.
• Future research requires broader chemical diversity and functional validation for wider applicability.